HARRISON — An end appears to be in sight for town residents on Hamilton Street who have been contending with a recurring sinkhole, water main breaks, a cave-in and road closures for more than a year.

The problems on Hamilton Street near Schuyler Avenue are due to a leaking 42-inch sewer main that has caused the soil to erode and shift under the roadway, Town Engineer Rocco Russomanno said yesterday.

There have been road closures on Hamilton on and off for more than a year, but it has been completely closed near Schuyler since the beginning of the year.

About three months ago there was a cave-in on the street, Russomanno said.

The Passaic Valley Sewerage Commission installed a liner in a portion of the sewer line, but there was a problem with the liner, and then another section of the sewer line was found to be damaged, Russomanno said.

A contractor for the PVSC is expected to begin work this week replacing a 300- to 400-foot section of the sewer line on Hamilton and it’s hoped the project will be completed by late October, Russomanno said.

Harrison Mayor Raymond J. McDonough sent a letter to residents earlier this month, stating: “The closure of Hamilton Street has been a huge inconvenience, and I want you to know that you have not been forgotten. The good news is two-fold: PVSC now has a schedule in place to wrap things up and they are going to install brand new sewers and water mains, so that future breaks will not occur.”

Asked why it has taken so long to make repairs, PVSC spokeswoman Holly Gilroy said: “PVSC is actively addressing an unanticipated situation, involving a 90-year-old sewer.”

She added: “Given the aging infrastructure, this has required an increase in the original scope of work. The PVSC has authorized an additional expenditure of over $1 million to address this condition.”